Allen-Bradley 1746-P2 SLC 500 Power Supply Module

The Allen-Bradley 1746-P2 is a robust and versatile power supply module designed for use with the SLC 500 modular automation system. It provides reliable power to the system’s processors, I/O modules, and communication adapters. The module is known for its reliable operation, versatility, and features that support high-inductive load applications in industrial environments.

Key Features and Specifications

Electrical Characteristics:

• Input Voltage:
  • 85-132 V AC or 170-265 V AC (jumper-selectable).
  • Frequency: 47-63 Hz.
• Inrush Current:
  • Up to 20 A.
• Typical Power Requirement:
  • 180 VA line power.
• Output Voltage:
  • 24 V DC, with a range of 18-30 V DC.
  • Includes a 5 V DC backplane power output.
• Output Current Capacity:
  • 5 A at 5 V DC.
  • 0.96 A at 24 V DC.
  • 200 mA user-supplied power at 24 V DC.
• Fuse Protection:
  • 1746-F2 internal fuse for short-circuit protection.

Performance and Reliability:

• CPU Hold-up Time:
  • 20 ms under full load.
  • 3000 ms with no load.
• Isolation:
  • 1800 V AC RMS between input terminals and backplane for 1 second.
• Overcurrent Protection:
  • Series A/B: Complete power supply and CPU fault shutdown.
  • Series C: User power shutdown, CPU continues operation.

Mechanical and Installation:

• Dimensions:
  • 5.5 x 3.3 x 5.7 inches.
• Weight:
  • 1.1 kg (2.5 lbs).
• Enclosure:
  • Open-type, must be installed in a 1746 chassis.
• Connections:
  • Front panel with 5 terminals for AC line, DC power, and grounding.
  • Jumper pins for input voltage selection.

Environmental Specifications:

• Operating Temperature:
  • 0-60°C.
• Storage:
  • Designed for industrial environments with proper surge protection.
• Compliance:
  • Meets industrial safety and reliability standards.

Notable Features:

1. Voltage Jumper Selection:
   • Switchable between 100/120 V AC and 200/240 V AC using jumper pins.
2. Hold-Up Time Feature:
   • Ensures temporary operation of the PLC processor during brief input power dips.
3. Durable Design:
   • Protects against electrical surges and arcs with optional isolation transformers for high-inductive load environments.
4. Revisions for Enhanced Features:
   • Series A/B: Shutdown on overcurrent with CPU fault.
   • Series C: Allows CPU to continue running under user power shutdown.

Applications

The 1746-P2 Power Supply is suited for industrial automation systems requiring reliable power delivery, such as:

• Manufacturing assembly lines.
• Process automation.
• Material handling systems.
• Machine control applications.

Ordering Information:

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Catalog Number: 1746-P2
• UPC: 10662468088326
• Fuse Replacement Part Number: 1746-F2 or equivalent.